MT3D with VMF

[saba joudaki]

Hello everyone,

I am trying to run a contamination transport model with MT3D and am using visual modflow flex (version 11). The flow simulations is very reasonable and calibrated but it seems the advection is not taken into account when calculating the transport part. the plume is staying as it initially was and just diffuses a bit without moving with the flow. What am I possibly missing?

[Richard Winston]

The flow velocities might be slow. You could try using MODPATH to just better understand the velocities better.

On Wed, Sep 9, 2026, 8:27 AM saba joudaki <saba.j...@gmail.com> wrote:

Hello everyone,

I am trying to run a contamination transport model with MT3D and am using visual modflow flex (version 11). The flow simulations is very reasonable and calibrated but it seems the advection is not taken into account when calculating the transport part. the plume is staying as it initially was and just diffuses a bit without moving with the flow. What am I possibly missing?

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